Group ID A number assigned to equipment which defines it as a member of a group when addressed by the burst controller.
GUI Graphical User Interface – A form of graphical shell or user interface to a computer operating system.
H
HDLC High Level Data Link Control – A standard defining how data may be transmit- ted down a synchronous serial link.
HPA High Power Amplifier – The amplifier used in satellite communications to raise the transmit signal to the correct power level prior to transmission to satellite. See also SSPA.
HTTP Hyper Text Transfer Protocol – The Internet standard for World Wide Web (WWW) operation.
Hub The central site of a network which links to a number of satellite earth sites.
| I |
ICMP | Internet Control Message Protocol. |
Installation | A program which guides the user through the process of installing an applica- |
Wizard | tion. |
IF | Intermediate Frequency – In satellite systems, IF frequencies are usually |
| centered around 1200 MHz |
IP | Internet Protocol – A format for data packets used on networks accessing the |
| Internet. |
ISP | Internet Service Provider – A company providing Internet access. |
ITU | International Telecommunications Union. |
Vipersat |
